Improvement in grist-alarms



N. BRUNER.

GrsvtxAlarm. l N`O. 158,965. I Patenied Oct. 191875.

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@/M WW /Ww W9 VMM N. PETERS, PNOTO-LITHOGRAPHER. WASHINGTON, D C4 NTTEEASTATES PATENT FFIoE- NOAH BRUNER, OF MEGHANIGSBURG, PENNSYLVANIA.

IMPROVEMENT IN GRlST-ALARMS.

Specicatiou forming part of Letters Patent No. 168,965, dated October19, 1875; application filed July 10, 1575.

To all whom it may concern:

Be it known that I, NOAH BRUNER, of Mechanicsburg, in the county ofCumberland and State of Pennsylvania, have invented certain new anduseful Improvements in Alarm Attachments for Hoppers; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being had to the accompanyingdrawings, which form part of this specitication.

My invention relates to an improved alarm attachment for hoppers; and itconsists in the arrangement and combination ot' parts that will be morefully described hereinafter, whereby an alarm is given by the ringingot' a bell as soon as the supply ot' grain in the hopper runs low.

Figure 1 is a side elevationofl my invention. Fig. 2 is a section ot'the same.

a, represents a common hopper, which is supported in any suitable frame,b. The tube c, that conducts the grain from the hopper, has its lowerend projecting down into the tube d, which is madeadjustable up and downby means ofthe set-screw e and leverf. Upon the top of the arch g issecured a suitable plate or other device, h, which acts as a valve tothe lower end ot' the adjustable tube d, and controls the How ot' grainfrom the hopper. The valve or plate h has a thick piece otl leather, 7,secured to its under side, which leather has a hole cut in it to receivea projection on the top ot' the clevis 6. This clevis is secured to thetop ot' the arch by means ot' a setscrew, and is adapted to be attachedto any arch in use. The leather makes the plate tit tightly in place,and yet allows it to be removed at will. Secured to the inside of thehopper is a tlat hinged plate or other equiva- I lent device, i, to theupper hinged part of which is attached a string or small chain, j, whichstring or chain extends across the hopper, down through its side, andhas attached to its lower end the curved rod l. This rod passes downthrough an arm that projects out from the side ot' the leverf, and ismade movable up and down, the arm l, that supports it, being madeadjustable back and t'orth ou the lever, so as to adapt the rod to thedi'erent-sized holes in the eye ot' the stones.

While there is a sufficient supply of grain in the hopper the weight otthe grain keeps the hinged plate pressed back against the side ot' thehopper, as shown in dotted lines, and the lower end ot' the rod Zraisedup above the top of the revolving arch g, that is attached to themillstone. As the supply ot' grain begins to run low its weight isnolonger sutcient to hold the plate pressed back, so that the weight ot'the rod draws it forward until the rod sinks i'ar enough down to bestruck by the arch when the bell 5 011 the upper end oi' the rod beginsto ring, and thus sounds the alarm.

This apparatus will work with any kind of grain with unfailing accuracy,and always give the miller notice in time to prevent the heating andconsequent injury to the stones.

Having thus ldescribed my invention, I claiml. The combination ot' thehopper a., hinged plate t', cord j, falling rod l, and 'bell 5 with theleverf, perforated arm 1, and set-screw e, whereby both the feed fromthe hopper and the distance the rod l shall fall are regulated,substantially as shown.

2. The combination ot' the lever f, adjustable supporting-arm l, and rodl, substantially as set t'orth.

In testimony that I claim the foregoing I have hereunto set my hand this23d day ot' June, 1875. f

NOAH BRUNER.

Witnesses:

F. A. LEHMANN, WM. B. UPPERMAN.

